Cited by 100Genetics, Aging, and Longevity in Model OrganismsGenomics, phytochemicals, and oxidative stressRedox biology and oxidative stress

Declining signal dependence of N rf2‐ M af S ‐regulated gene expression correlates with aging phenotypes

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Rahman, Mohammed Mahidur, Sykiotis, Gerasimos P., Nishimura, Mayuko, Bodmer, Rolf, Bohmann, Dirk·2013·Aging Cell

Abstract

Summary: Aging is a degenerative process characterized by declining molecular, cell and organ functions, and accompanied by the progressive accumulation of oxidatively damaged macromolecules. This increased oxidative damage may be causally related to an age‐associated dysfunction of defense mechanisms, which effectively protect young individuals from oxidative insults. Consistently, older organisms are more sensitive to acute oxidative stress exposures than young ones. In studies on the Drosophila N rf2 transcription factor C nc C , we have investigated possible causes for this loss of stress resistance and its connection to the aging process. Nrf2 is a master regulator of antioxidant and stress defense gene expression with established functions in the control of longevity. Here, we show that the expression of protective N rf2/ C nc C target genes in unstressed conditions does not generally decrease in older flies. However, aging flies progressively lose the ability to activate N rf2 targets in response to acute stress exposure. We propose that the resulting inability to dynamically adjust the expression of N rf2 target genes to the organism's internal and external conditions contributes to age‐related loss of homeostasis and fitness. In support of this hypothesis, we find the D rosophila small M af protein, M afS, an N rf2 dimerization partner, to be critical to maintain responsiveness of the N rf2 system: overexpression of M afS in older flies preserves N rf2/ C nc C signaling competence and antagonizes age‐associated functional decline. The maintenance of acute stress resistance, motor function, and heart performance in aging flies overexpressing M af S supports a critical role for signal responsiveness of N rf2 function in promoting youthful phenotypes.

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  • Nrf2 signaling decreases with age in a variety of model organisms including flies, mice, non-human primates, and humans.

    “Nrf2 signaling has been found to decrease with age [207] in a variety of model organisms including flies [208], mice [209], non-human primates [210,211], and humans [207,212,213,214].”
  • NRF/SKN-1 activity is dysregulated late in life.

    “Consistent with a role in the progression of aging, the activity of NRF/SKN-1 is dysregulated late in life (Rahman et al., 2013).”

    From The Aging Epigenome (2016) · cites this paper as Rahman et al., 2013

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Authors
Rahman, M. M., Sykiotis, G. P., Nishimura, M., Bodmer, R., & Bohmann, D.
Affiliations
  • University of Rochester Medicine (US)
  • Sanford Burnham Prebys Medical Discovery Institute (US)
Corresponding author
Bohmann, Dirk
Venue
Aging Cell
Publisher
Wiley
Published
2013-05-16
Volume
12
Issue
4
Pages
554-562
ISSN
  • 1474-9718 (ISSN-L)
  • 1474-9726
OpenAlex
W2073121333
Cited by
100
References
39
Citations by year
2026: 3 · 2025: 2 · 2024: 2 · 2023: 7 · 2022: 9 · 2021: 8 · 2020: 14 · 2019: 7 · 2018: 7 · 2017: 11 · 2016: 10 · 2015: 12 · 2014: 5 · 2013: 3
FWCI
3.55
Type
journal article
Language
en
Open access
Locations
  • Aging Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (R01 AG039753-01)
  • NYSTEM (N08G-048, HL54732, HL098053, AG033456)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics, phytochemicals, and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
Keywords
Nrf2, CncC, aging, oxidative stress resistance, Drosophila, antioxidant defense, longevity, motor function, age-related decline
MeSH terms
Adaptation, Physiological, Aging, Animals, Cell Line, Drosophila, Female, Heart, Male, Motor Activity, Phenotype, Repressor Proteins, RNA, Messenger, Transcription Factors, Transcription, Genetic, Signal Transduction, Oxidative Stress, Gene Expression Regulation, Developmental, Drosophila Proteins, Maf Transcription Factors, Small

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